Watchman s time-detector



N0. 6lD,l45. Patented Aug. 30, 1898. J. MCCARTHY.

WATCHMANS TIME DETECTOR.

(Applicltion fllod July 18, 1898.)

(No Model.)

71. Z T WITNEESEE 5] 45 A TEJRNEY.

UNITED STATES PATENT OFFICE.

JOSEPH MCCARTHY, OF FRANKLIN, OHIO, ASSIGNOR OF THREE-FOURTHS TO LEO H.MCCARTHY, OF SAME PLACE, AND CHAS. l3. OGLESBY, OF

MIDDLETOXVN, OHIO.

WATCHMANS TIME-DETECTOR.

SPECIFICATION forming part of Letters Patent No. 610,145, dated August30, 1898.

Application filed Tune 13,1898. Serial No. 683,266- (No model.)

To all whom, it may concern.-

Be it known that I, JOSEPH MCCARTHY, a citizen of the UnitedStates,residin g at Franklin,in the county of \Varren and State of Ohio,have invented certain new and useful Improvements in VatchmensTime-Detectors; and I do hereby declare that the following is a full,clear, and exact description of theinvention,which will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to the letters ofreference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in time detectorsfor night watchmen.

The invention has for its object the provision of a cheap instrument forthe purpose of ascertaining whether a watchman is attending to hisduties.

In the accompanying drawings, Figure 1 is an elevation of a portion ofthe inner side of a door to which a portion of the time-detector isattached. The clock and its supportingcase are detached. Fig. 2 is anelevation of the opposite side of the supporting plate shown in Fig. 1.Fig. 3 is a section 011 the line as a; of Fig. 1, with the clock and itssupporting-case in position. Fig. 4 is an elevation of theclock-supporting case detached. Fig. 5 is an elevation of the time dialor disk.

Similar letters of reference indicate corresponding parts in the severalviews of the drawings.

The drawings show my improved time-detector attached to the inner sideof a doorA, and for which purpose there is a suitable recess B therein.A look C is secured in said chamber. This lock has a key-openingentirely through it, so that when a half-turn is given the key D it willbe in a position to be passed entirely through the look, as shown inFig. 3.

A supporting-plate E is secured to the inner side of the door, over therecess therein, and has mounted on its inner side a resilient arm K,that is movable inwardly and also in an arc of a circle. The inwardmovement is had by the front lug or ward c of the key coming in contactwith the upper part thereof, and the arc movement is had by means of asegmentgear L, which is fixed to the shaft upon which said arm is alsofixed. Apinion M meshes with said segmentgear and is turned byafinger-piece O, that is-on the inner end of the shaft upon which thesaid pinion is mounted. A plate N also turns with the said shaft and hason it an index-mark a, that may be brought in line with any of the marksZ) on the rear side of the plate E,which indicate the days of the weekand correspond with the concentric spaces on the time-dial I. Thisenables the arm K to be moved to bring the pin J thereon in a positionto make contact with the dial in the proper space. The supporting-plateE has a T- shaped slot F and a segmental slot F.

The time-dial, as before stated, has a series of concentric spaces.These spaces designate the several days of the week; but the innermostone contains the time, and the said dial moves with the center pinion ofthe clock in a well-known manner. It is accessible to the pin J throughthe segmental slots F and H, the latter slot being in the wall of theclocksupporting case G. The back of this case G is open, so the elockPmaybe placed therein. The said case G is supported on the plate E bymeans of a T-shaped projection F, which looks with the T-shaped slot Fin the plate E. The clock and its supporting-case C may be easilydetached from this position each morning, examined, and placed away bythe person opening the store or other place where the time-detector isused. When the said case G is in position on the plate E, the seg mentalslot H becomes in line with the similar slot in the plate E, so that thepin J may pass through said slots at any point of their length.

The lock C may be of any of the well-known types that have keys withspecial wards, and an opening is provided therein for the key to passentirely through it, as shown in Fig. 3. lVhen the key is moved to aposition to admit of its being thus pushed entirely through the lock,the front lug or ward 6 will come in contact with the end of the arm K,and the pin J on said arm will be pressed in against the dial I. Thesaid arm K is set with relation to the concentric spaces on the dial byturning the finger-piece 0 until the index-point a comes in line withthe proper day on the adjacent scale. v

The device, it will be observed, is non-accessible at all times to thewatchman, save through the use of a key with which he is provided forthe purpose of registering his presence.

Having described my invention, I claim 1. In a watchmans time-detector,the combination of a clock having a rotating time-dial, and a lockhaving a key-opening entirely through it, of a resilient arm mountedbetween the lock and the face of the dial and movable in an are, a pinon said arm that may be shifted to vary the positions of its impressionson the time-dial when the key is moved inwardly against said arm,substantially as and for the purposes specified.

2. In a Watchmans time-detector, the combination of a supporting-platehaving a T- shaped and a segmental slot therein, a clocksupporting casehaving a T-shaped projection adapted to interlock with the T-shaped slotin said supporting-plate, and a segmental slot in said clock-supportingcase, a resilient arm with pin thereon adapted to project through saidsegmental slots, a segment-gear fixed to the shaft of said arm, and apinion meshing with said segment-gear, and means for directing themovement of said pinion to regulate the position of the said arm,substantially as and for the purposes specified.

3. In a watchmans time-detector, the combination of a supporting-platehaving a T- shaped and a segmental slot therein, a clocksupporting casehaving a T-shaped projection adapted to lock with said T-shaped slot,and a segmental slot adapted to be in line with the segmental slot inthe supporting-plate, a time-dial exposed through said segmental slots,a segment-gear connected With said arm, a pinion meshing with saidsegmentgear, and a lock and key by means of which said resilient arm isoperated, substantially as and for the purposes specified.

4. In a watchmans time-detector, the combination of a supporting-platehaving a segmental slot therein, a clock-supporting case mounted on saidsupporting-plate and having a segmental slot therein in line with thesimilar slot in the said supporting-plate, a time-dial exposed throughsaid segmental slots, a resilient arm mounted on said supporting-plate,a pin on said arm adapted to

